Political map of Europe & the Mediterranean 18 March 2014 (Crimean Crisis): The Eurozone crisis had only partially subsided by 2014, when a pro-European revolution toppled the pro-Russian government of Ukraine (2014 Ukrainian revolution). Russia responded by massing troops on the Ukrainian border and supporting the accession of the Ukrainian republic of Crimea to the Russian Federation (2014 Crimean crisis). The US and its allies moved to support Ukraine by imposing sanctions on Russia (International reactions to the 2014 Crimean crisis).